# Forces

## Acceleration

Acceleration is how quickly the velocity is changing whether it be speed, direction or both. Acceleration is a measure of how quickly the velocity of an object is changing.

## Demo

In this tutorial you will learn how to calculate the acceleration of a moving object.

The equation is written like this:

$a = { v \unicode{x2013} u \over \text{t}}$

## Chilled practice question

Calculate the acceleration if the velocity increases from 4 m/s to 76 m/s in 8 s.

## Frozen practice question

How long does it take for the velocity of a bus to increase from 12 m/s to 20 m/s if it is accelerating at 4 m/s2.

## Science in context

Acceleration is how quickly the velocity is changing whether it be speed, direction or both.

## Millie’s Master Methods

#### Millie’s Magic Triangle

The ability to rearrange equations is the first step to successfully solve Physics calculations. Millie’s…

#### Calculation Master Method

Performing and mastering this routine will guarantee you maximum marks when solving Physics calculations. Calculation…

## The Fridge Physics Store

#### Teacher Fast Feedback

Feedback to students in seconds – Voice to label thermal bluetooth technology…

#### Get Fridge Physics Merch

Why not buy a Fridge Physics baseball cap, woollen beanie, hoodie or polo shirt, all colours and sizes available. Free delivery to anywhere in the UK!…

## Speed

Speed is how fast an object is moving in no given direction. Velocity is how fast an object is moving in a given direction. In physics, you can calculate the average speed by taking the total distance travelled and dividing it by the total time required to travel that distance.

## Demo

In this tutorial you will learn how to calculate the speed of an object, velocity is speed with direction for example 20 m/s north.

The equation is written like this:

$S = { \text D / T}$

## Chilled practice question

Calculate the speed of a car which travels 2000 m in 400 s.

## Frozen practice question

How long does it take a car to travel 360 m at 12 m/s ?

## Science in context

Speed is how fast an object is moving in no given direction. Velocity is how fast an object is moving in a given direction.

## Millie’s Master Methods

#### Millie’s Magic Triangle

The ability to rearrange equations is the first step to successfully solve Physics calculations. Millie’s…

#### Calculation Master Method

Performing and mastering this routine will guarantee you maximum marks when solving Physics calculations. Calculation…

## The Fridge Physics Store

#### Teacher Fast Feedback

Feedback to students in seconds – Voice to label thermal bluetooth technology…

#### Get Fridge Physics Merch

Why not buy a Fridge Physics baseball cap, woollen beanie, hoodie or polo shirt, all colours and sizes available. Free delivery to anywhere in the UK!…

## Weight on the Moon

Weight is the force acting on an object due to gravity. The weight of an object is defined as the force of gravity on the object and can be calculated as the mass times the acceleration due to gravity.

## Demo

In this tutorial you will learn how to calculate the weight of an object on the moon due to its force of gravity.

The equation is written like this:

${ \textit W} = {\text m \;} {\text x \;} {\text g}$

## Chilled practice question

Copy out the question and attempt to calculate the answer before watching the solution. Write down the equation and show all of your working, remember to add the units to your answer, this routine will guarantee you maximum marks in an exam. Mark your solution and correct if needed.

Calculate the weight of a flag pole on the moon, it has a mass of 5 Kg.

## Frozen practice question

Copy out the question and attempt to calculate the answer before watching the solution. Write down the equation and show all of your working, remember to add the units to your answer, this routine will guarantee you maximum marks in an exam. Mark your solution and correct if needed.

What is the mass of an oxygen cylinder on the moon if it has a weight of 4.8 N ?

## Science in context

Weight is the force acting on an object due to gravity.

## Millie’s Master Methods

#### Millie’s Magic Triangle

The ability to rearrange equations is the first step to successfully solve Physics calculations. Millie’s…

#### Calculation Master Method

Performing and mastering this routine will guarantee you maximum marks when solving Physics calculations. Calculation…

## The Fridge Physics Store

#### Teacher Fast Feedback

Feedback to students in seconds – Voice to label thermal bluetooth technology…

#### Get Fridge Physics Merch

Why not buy a Fridge Physics baseball cap, woollen beanie, hoodie or polo shirt, all colours and sizes available. Free delivery to anywhere in the UK!…

## Weight on Earth

Weight is the force acting on an object due to gravity. The weight of an object can be defined as the force of gravity on the object. Since the weight is a force, its unit is the Newton.

## Demo

In this tutorial you will learn how to calculate the weight of an object due to the force of the Earths gravity.

The equation is written like this:

${ \textit W} = {\text m \;} {\text x \;} {\text g}$

## Chilled practice question

Calculate the weight of a bench on Earth which has a mass of 25 Kg.

## Frozen practice question

Calculate the mass of an elephant if it has a weight of 60 KN on Earth.

## Science in context

Weight is the force acting on an object due to gravity.

## Millie’s Master Methods

#### Millie’s Magic Triangle

The ability to rearrange equations is the first step to successfully solve Physics calculations. Millie’s…

#### Calculation Master Method

Performing and mastering this routine will guarantee you maximum marks when solving Physics calculations. Calculation…

## The Fridge Physics Store

#### Teacher Fast Feedback

Feedback to students in seconds – Voice to label thermal bluetooth technology…

#### Get Fridge Physics Merch

Why not buy a Fridge Physics baseball cap, woollen beanie, hoodie or polo shirt, all colours and sizes available. Free delivery to anywhere in the UK!…

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